Rotary cultivator



'Spt 23, 1930. L P. BAGAN 1,776,612

ROTARY CULTIYATOR Filed Oct. 4, 1928 4 Sheets-Sheet l NVENTOR Bag/af?.

WITNESSES N ATTORNEY sept. 23, 1930.-

J. 15. BAGAN RTARY CULTIVATOR Filed oct. 4, 1928 4 Sheets-Sheet 2 .SmwmlSept. 23, 1930. v J. P. BAGAN ROTARY cULTvA'roR 4 sheets-sheet s Filedont. 4, 19:28

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WITNESSES am $045.

NvENToR ATTORNEY 55H0). wv

Sept. 23, 1930. .1. P. BAGAN 1,776,612

ROTARY cULTIvA'rR Filed oct.. 4. 1928 4 sheets-sheet 4 INVENToR WITNESSs cfagaw.

' Y BY v ATTORNEY nismsupported at the rear of a tractor, wheelsPatentedA Sept. 23, 1930A Tas PATENT- Ormea JOHN P. BAGAN, 0F VANCOUVER,BRITISH COLUMBIA, CANADA ROTARY' ctmrrvnmon Y Appncaunn mea center451925. sum1 110,310,297.

.This invention relates to rotary plows, An object of the invention isthe provis1on of a spirally shaped plow which is movable to or from anoperative position by a mechal being carried by the supporting mechanismof the plow -gauging the depth of the cut.

Another object ofthe invention is theprovision of a spirally shapedplow; driven from arevolving member of a tractor, certain of theoperating parts for the plow forming a pivot around which the plow ismoved when raising or lowering said plow to an operative position.

A further provision of atractor having a' power takeoff operativelyconnected with a rotary plow.`

or cultivator in which a rockable shaft is mounted transversely of therear end of a tractor and connected by a curved bar to the supportingymechanism of the plow so that 'when the shaft is rocked, the plow willbe raised or lowered. 1

A still further object of the invention is the provision of a rotaryplow having spirally arranged blades removably connected to a shaft, theshaft havin spirally formed ribs conforming to theco uration of theblades so that the blades maybe secured to the ribs in aAremovablemanner.

Another objectvof the invention is the provision. of a rotary plowdriven at the rearA end of a tractor by Ya shafthaving operativeconnection with a power take-oftn of the tractor, the other end of theshaft being supported bv a bracket having a thrust bearing received by asocket or bearing within the shaft, the bracket having a pivotalVconnection with a rock shaft which controls theV position ofthe low. Y fp This invention/ will be best understood from p la consideration of thefollowing detailed description, in connection with the accompanying`drawings; nevertheless, it is to be underdisclosure being susceptibleofsuch changes and modifications as shall deine no material departurefrom the salient features of the invention as ,expressed in' theappended claims. i

object of the-'invention is thel stood that the inventionis not confinedto the In the drawingsg--fl' v Figure 1 is a longitudinal side viewofthe tractor equipped with my rotary cultivator.

Figure 2 is a fragmentary vertical section showing the operativeconnection between the moving part of the tractor and therotarycultivator, y Figure 3 is a fragmentary side view of the cultivatorlocated in an elevated position,

Figure 4 is a rear end view of the tractor showing the rotary cultivatorin an operative position, A

Figure 5 is a vertical section showing operativevconnection between amoving part of the tractor and the shaft which drives the rotarycultivator, A

Figure 6 is a fragmentary longitudinal vertical section of thecultivator disposed in the bearings,

Figure 7 is a transverse vertical section of the rotarycultivatorshowing the method of .connecting the blades of the Aspiralcultivator to the shaft.

wardly from the tractor and has a pair of 'shafts 13 and 14 havinguniversal. connections, respectively, with the shaft 12 and a shaft 15.Shaft 15 projects intoA a housing 16 with a sprocket 17 secured to theshaft 15, and a chain .18 is trained over the sprocket 17, and asprocket (not shown) which is secured to a shaft 19, mounted in bearingsin thelower end of the housing 16. Said housing is supported in anyapproved manner from the rear portion of the tractor.

" A gear 20 is mounted in an auxiliary housing 21 connected with thelhousing 16. Gear 20 is in mesh with a gear 22 rigid with av shaft 23which is supported in turn by bearings 24 carried at the end of a tube25.

A shaft 30 has/a universal connection 31 at one end'with the shaft 23.vThe other end is connected by means of a universal joint 32 mounted in abearing 35 carried by' a channel'- iron 36 Awhich'is secured Vto thebottom of 'the housing 16. The housing 34 is .formed integrally withoneplate 37 of a housing 38, so that when the last mentioned housing isoscillated the housing 34 will be vrevolved in ythe bearing 35. Housing38 is provided with 'bearings 39 and 40 in which are mounted the 30 issupported from the rear end of the tractor.

f A sprocket 43` is rigid with the shaft 41, while a sprocket 44 isrigid with the. shaft 33 and locatedwithin the housing 38, as is thesprocket 43.' A chain 45 is trained around the sprockets 43 and 44.

The shaft 41 forms a reduced portion of a cultivator shaft 50. Thisshaft extends transversely at the rear end of the tractor and isprovided with spirally arranged and integrally formed `ribs 51 havingperforations 52V in which bolts 53 arev inserted. for securing the sirall arran ed blades 54 to the shaft aid lades orma cultivatingimplement. It will be seen b this construction that if a portion of aspiral yarranged blade were broken, it would be n otnecessary to discardthe entire shaft with the attached cultivating Y `implement, sincel theblades 54' aremade in sections and bolted -to the ribs 51, whereby it ispossible to remove any portion of thecultivating implement andsubstitute for said portionanew spiral blade.

The outer end of the shaft 50 is expanded at 55 and provided with arecess 56 t'o receive ported by means of a thrust bearing 58 mounted ina flared pocket 59 of the shaft 50 and the bearing is carried by meansof 'a bracket or arm 61 secured at itsupper end to arod 60. ,f

A bracket 63 projects from onel end of the r'od 60 and is provided witha perforation to receive the bent end 64 of a rod von which is pivotallymounted on a pintle 66 carried by the lower end of the bracket arm 61.'A gauge wheel 70 is mounted on a stub axle 71 carriedv by the housing38, while a gauge wheel 72 is carried by a stub axle 73 secured the arm65. A rock shaft 90 is -mounted bearings 91 carried by the rear end ofthe tractor, A'

. lever. 92 is rigid at one end withthe rock shaft `90 and extendsupwardly in substantially a vertical position. The `upper end of thelever 92'is perforated to receive one end of the rod- 93, and a nut 94on the. end of the rod 93 connects the rod with the lever, but rmitsaslight relatlve movementbetween t e lever 4. andv rod. A coil sprin 95embraces th'erod 93 and has one end a utting the lever 9 2, et

while the other end-'abuts a collar 96.

Alever 100 is pivotallymounted at 101 on a bracket 102. A link 103 haspivotal connections between the lever 100 and the flattened portion 104of the rod 93, so that as the rod is oscillated towards the right inFig. 1, the lever 92 will be moved in the direction indicated by thearrow. Means (not shown) is provided for maintaining` the lever 100 inpredetermined position for supporting the rotary plow in an elevatedposition out of contact with the ground. A lever 110 is rigid with therock shaft 90 and is provided with afperforation to 'receive 116embracing therod 60 intermediate the 'v f ends thereof. 'lhe other endof the curved rod 115 is connected to a lever 117 rigidly 'attached tothe shaft 90.

A wheel 120 mounted on an axle 121 carried by a iiange 122 projectingfrom the member 50, prevents lateral displacement of the plow. A y

The operation of my device is as follows The helically shaped plow isrevolved'by means of the power take oil' from the tractor,

and at a speed vwhich is conducive to the best results. The plow islowered after the gauge wheels 70 and 72 have been set so that it willproduce the proper depth of cultivation of the soil. It will be notedthat the gauge wheel 70 rests upon the bottom of the furrow, while gaugewheel 72 rests upon the ground. a conically shaped axle 57 This axle issup- When it is desired to elevate the plow above the ground, as shownmore particularly in Fig. 3, the lever92 is rocked through the level'100, thereby rocking the shaft and through the levers 110 `and 117 thehollow rod 60 is elevated carrying with it the plow 50.

`1." In a cultivator, a tractor, a rod, means f or mounting fthe rod forvertical swinging movement at one end of the tractor, a bracketprojecting from one end of the rod, a shaft provided at one end with asocket, a bearing carried` by--the bracket and received by the socket, arotary cultivating implement rigid with the shaft, means for operativelycon' necting the other end of the shaft withV a moving part of thetractor for causing rotation of the cultivating implement, and means forelevating the rod and likewise the implement, said .rod lying inahorizontal plane, said elevating means including means'for supporting arod in elevated position.

3. In a cultivator, a tractor, a rod, means for mounting the rodforvertical swin movement at one end of the tractor an including ahousing, a bracket projecting from one end of the rod, a shaft providedat one end with a socket, a bearing carried by the bracket and receivedby the socket, a rotary v cultivating implement rigid with the shaft,

means for operatively connecting the shaft with a movable part of thetractor for causing rotation of the cultivating implement,

means for elevating the rod and likewise the implement, s aid housingbeing connected with theother end of the rod and adapted to enclose part'of the operative connections between the shaftv and the moving part ofthe tractor. p

4. In a cultivator, a tractor, a rod, means v for mounting the rod forvertical swinging 'movement at one end ofthe tractor and includng ahousing, a bracket projecting from one end. of the rod, a shaft providedat one end with a socket, a bearing carried'by the bracket and receivedby the socket, a'rotary..

" cultivating implementrigid the shaft, l

- -^withthe otherrendfofthe rod and adapted'to 7 said housing embracingthe spr et anl Y chain, and- .means for supporting a,rod

means for operatively connecting the shaft with a movable'part of thetractor'for causimplement, likewise the enclose partof the' operativeconnections bea sprdcketat se end the other end of the in one end of thehoushousing for causing rotation of the first-men-4 tioned shaft, and acultivatingv implement connected to the first shaft.

7. In a cultivator, a tractor, a rod, means for swingably supporting therod from therear of theA tractor, and including a housing rigid withone' end of the rod, a bracket pro- 'ectingfrom the other end of therod, said rted from the racket bein provided with a'bearin a Y drivenshaft aving a socket at one en receiving the bearing, theotherend of theshaft being journaled in one end of the housin tions between the shaftsand located within the housing for causing rotation of the firstg, asecond driven shaft supported fromthe tractor and having operativeconnectionsv mentioned shaft, a cultivating implement carried by thebracket.

i JOHN P. BAGrAN.

connected to the first shaft, and a gauge wheel tweenthe shaftandthevmoving part of the tractor, and gauge wheels supported by the Abracketl andthe housing. Y

5. In a cultivator, a tractor, a rod, means for mounting the rod'vforYvertical swinging movement at one end of the tractor an `in cluding ahousing, a bracket projec from one end lof the rod, a shaft supportedythe bracket and housing, a rotary cultivating im- Y plement rigidwiththeshaft, a second shaft y lmounted for rotation adjacent one endofthe tractor,r means operatively connecting the' last-mentioned .shaftwith, a mo the tractor, asprocket on'the -en of 'each shaft, a chaintrainedlaiund'thef" various horizontal positions from the'tractor.

6. In a cu'1tivator,a tractor, a rod, means for s. `V ably supportingthe rod from the rear of tin e tractor and inclu .ghousing rigid withone end ofthe rod, a 'racket probeing provided with' Aa bearing,V

part of

